/*
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 * and open the template in the editor.
 */

/**
 *
 * @author Administrator
 */
public class CheckPhone
{
        public static void main(String[]args){
            String mobile="1320202020";
            boolean flag=true;
            if(mobile.length()!=11){
                flag=false;
            }
            if(!(mobile.startsWith("13")||mobile.startsWith("15"))){
                flag=false;
            }
            String numstr="0123456789";
            for(int i=0;i<mobile.length();i++){
                char c=mobile.charAt(i);
                int temp=numstr.indexOf(c);
                
                if(temp<0){
                    flag=false;
                    break;
                }
                }
                if(flag)
                {
                    System.out.println("是合法的手机号码");
                }
                else
                {
                      System.out.println("不是合法的手机号码");
                }
            
        }
        }
